Ottaviano Riario

Ottaviano Riario (September 1479-1533) was a condotierro who was Lord of Imola and Forli, succeeding Girolamo Riario in 1488. He was also the Archbishop of Viterbo from 1506.

Biography
Ottaviano Riario was the eldest son of Girolamo Riario and Caterina Sforza, the Count and Countess of Forli and the rulers of Romagna. He was made Lord of Forli after the assassination of his father in 1488, but he was controlled by his mother and her lover Giacomo Feo. In 1495 his friends murdered Feo after Feo publicly humiliated Riario in public by slapping him, but his mother remained in power.

Riario was later hired as a condotierro by the Republic of Florence in 1497 and 1499, with Niccolo Machiavelli overseeing his recruitment the second time. Also in 1499 he aided his uncle Ludovico Sforza in fighting France and Venice during the Italian Wars, but in January 1500 Forli and Imola were captured by the Borgia-ruled Papal States. After Pope Alexander VI's death in 1503, Riario made unsuccessful attempts to reclaim his lands. In 1506 he became Archbishop of Viterbo, a post which he held until his death in 1523.